Chicago Sun-Times' Rummana Hussain tweeted the photo and reported: "Cook County cop is begging me to relay he snuck into office by PNC park & switched sign from "GO BUCS" to "GO CUBS".

Facebook user Travis Mpistolarides claims his father was the one who executed the swap. He posted a video and wrote: "So we're at a bar right next to PNC and there's an office building that reads lets go bucs. My dad goes in the elevator low key to the office and switches it to let's go Cubs. Somehow nobody saw him #wearegood".